ReSharper 2016.2 Help

Making Auto-Properties Get-Only

Starting from C# 6.0, you can define get-only auto-properties, which (similarly to
readonly fields)
can be only initialized via a constructor or an initializer.
ReSharper detects and helps you remove
the redundant
set
accessor on auto-properties that are initialized from the constructor/initializer and have no write usages.

Get-only auto-properties is a C# 6.0 feature.
By default, ReSharper automatically detects C# version based on the associated compiler.
However, you can specify the target C# version explicitly by selecting the project in the
Solution Explorer
and using the
C# Language Level
property in the
Visual Studio's Properties window
(choose
View | Properties Window in the menu).

If you do not want ReSharper to suggest you this, you can
change the severity level
of the code inspection that detects it
(Auto-property can be made get-only) to
Do not show.

The reverse functionality is also available.
If you decide to change the value of a get-only property later in your code (which leads to a compiler error),
ReSharper detects the error and suggests fixing it by adding the setter for the property:

Another option to make auto-properties get-only in a bulk mode is
code cleanup.
You can either
run code cleanup
with the default profile
Default: Full Cleanup
or run the cleanup with a custom profile solely targeted at your specific task
as described below.

To remove setters from auto-properties that only have read access

Create a new profile as described in the
Configuring Code Cleanup
section. In the
Selected profile settings
section for the new profile tick the
Make auto-property get-only, if possible
check box.

Click
Save
to apply the modifications and let ReSharper choose where to save them,
or save the modifications to a specific settings layer using the
Save To
drop-down list.
For more information, see
Managing and Sharing ReSharper Settings.

Select the scope where you want to make auto-properties get-only:

Set the caret anywhere in the file to make auto-properties get-only to the file.

Select one or more items in the
Solution Explorer
to make auto-properties get-only in the files under these nodes and their child items.

Right-click
anywhere in the text editor or right-click
the selection and choose
Cleanup Code
in the context menu.

In the
Code Cleanup Dialog that opens, select the newly created profile in the
Available Profiles
area.

Click
Run.
ReSharper will make auto-properties get-only in the selected scope.

Code cleanup is not applied to generated code.
By default, ReSharper provides the list of file masks and regions containing generated code
that are typically produced by Visual Studio (for example, Windows Form Designer-generated code).
If necessary, you can
edit the list of generated items
on the
Code Inspection | Generated Code
page of ReSharper options.

If you want to make auto-properties get-only without opening the
Code Cleanup Dialog, you can
bind the created profile to the
silent cleanup
and run it simply by pressing
Ctrl+Shift+Alt+F.
You can also create a
custom cleanup profile
that would combine making properties get-only with other code style tasks.